1602116021 has 16 divisors (see below), whose sum is σ = 1799343168. Its totient is φ = 1413676800.

The previous prime is 1602115997. The next prime is 1602116027. The reversal of 1602116021 is 1206112061.

It is a cyclic number.

It is not a de Polignac number, because 1602116021 - 2²⁶ = 1535007157 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1602115984 and 1602116002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1602116027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 171686 + ... + 180776.

It is an arithmetic number, because the mean of its divisors is an integer number (112458948).

Almost surely, 2^1602116021 is an apocalyptic number.

1602116021 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1602116021 is a deficient number, since it is larger than the sum of its proper divisors (197227147).

1602116021 is a wasteful number, since it uses less digits than its factorization.

1602116021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9572.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1602116021 is about 40026.4415230732. The cubic root of 1602116021 is about 1170.1224750646.

Adding to 1602116021 its reverse (1206112061), we get a palindrome (2808228082).

The spelling of 1602116021 in words is "one billion, six hundred two million, one hundred sixteen thousand, twenty-one".